Subtract 42/10 from 56/7
1st number: 8 0/7, 2nd number: 4 2/10
56/7 - 42/10 is 19/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
56/7 = 56 × 10/7 × 10 = 560/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
42/10 = 42 × 7/10 × 7 = 294/70 - Subtract the two like fractions:
560/70 - 294/70 = 560 - 294/70 = 266/70 - After reducing the fraction, the answer is 19/5
- In mixed form: 34/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-84/10 56/14-42/10 56/7-42/20 56/21-42/10 56/7-42/30 56/35-42/10 56/7-42/50 56/49-42/10 56/7-42/70